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Finding the Fourth Proportional to 8,696.79, 13,016.02 and 7,136.73

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Solution

The fourth proportional to 8,696.79, 13,016.02 and 7,136.73 is: 10,681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.79 : 13,016.02 = 7,136.73 : x
  2. Step 2: Convert to fraction form
    8,696.79/13,016.02 = 7,136.73/x
  3. Step 3: Cross multiply
    8,696.79x = 13,016.02 × 7,136.73
  4. Step 4: Simplify right side
    8,696.79x = 92,891,820.41
  5. Step 5: Solve for x
    x = 92,891,820.41/8,696.79
  6. Step 6: Final answer
    x = 10,681.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.